TW517196B - System and method for fine grained selective cache - Google Patents

Abstract

A system and method for distinguishing between dynamic and static document portions. Dynamic and static portions within an electronic document are identified with special tags. Static portions are less frequently updated from the original server than dynamic portions. Static and dynamic portions are cached to a storage area. In one embodiment, both static and dynamic areas are cached to nonvolatile storage. In another embodiment, the static portion is cached to a nonvolatile storage location while the dynamic portion is cached to random access memory. Portions of the document are thus updateable without needing to retrieve the entire electronic document. When the user requests an electronic document, the cache is checked for both static and dynamic portions. Non-stale portions are retrieved from the cache while stale portions are retrieved from the original server.

Description

517196 A7 B7 V. Description of the Invention (q) Technical Field Generally speaking, the present invention relates to a method and system for caching memory file information. More specifically, the present invention relates to an improved method and system for caching the dynamic and static portions of those files provided to a user via a network. BACKGROUND OF THE INVENTION General computer systems, especially personal computer systems compatible with the International Business Machines Corporation (IBM), have been widely used to provide computer capabilities to many segments of modern society today. Microprocessor-based systems find themselves in an array of smaller and more specialized objects (Object), most of which have not previously been contacted by computer technology. These devices are sometimes referred to as "pervasive compudng systems." Because their appearance includes both traditional computerized devices such as desktop computers, upright computers, and portable computers, as well as new computerized devices such as phones, instruments, automobiles, and other devices. Generalized computing devices typically include a system processor and associated volatile and non-volatile memory, a display area, input devices, and interfaces to other computing devices, such as network interfaces or modems. One of the distinguishing features of these systems is the use of a system board to electrically connect these components together. These generalized computing devices are such information processing systems. The dragon daggers are designed to be used by the king to give independent computing power to a single user, or to give a group of users independent computing power when the generalized computing device is networked. The generalized computing device is often not expensive, and it is suitable for individuals or companies. The generalized 4 computing device can also include one or more ㈤ devices (that is, this paper size applies the Chinese National Standard (CNS) A4g (2i〇χ2 mm2). ------ 517196 A7 B7 V. Description of the invention (

Peripherals), which are connected to the system processor to perform specialized functions. Examples of I / O devices include modems, audio and video devices, or specialized communication devices. Non-volatile storage devices such as hard drives, CD_ROM drives, and magneto-optical drives are also considered peripheral devices. Generalized computing devices often use networks such as local area networks (LANs), wide area networks (WANs), or other types of networks such as the Internet to link to computing systems and other generalized computing devices. By linking to a computer including a generalized computing device, one generalized computing device can use resources owned by another computing device. These resources can include documents stored on non-volatile storage devices and resources such as printers.

The server provides information to a client computer, such as a generalized computing device, linked to the server via a network. Client computers that receive documents from servers often store the documents in cache memory. This cache is usually stored on non-volatile memory attached to the client's computer system. A web cache is located between a web server (or source server) and a client or many clients, and pays attention to incoming HTML pages, images, and documents (collectively called objects). Copies are stored in cache memory. Then, if there is another request for the same object, it will use the copy it has instead of requesting it from the origin server. There are two main reasons for using network cache memory. First, to reduce latency-because the request is full from cache memory (which is closer to the client) rather than from a source or network server. 1. It takes less time for the customer to get the object and display it. This makes web sites appear more responsive. The second reason to use network cache is to reduce traffic—because each item only gets owed from the feeder, it reduces the amount of bandwidth used by the client. -5- 517196 A7 ______B7 V. Description of the invention 1 ~~) '--- Ο

This saves money if the client is paying for traffic, and has lower and more manageable bandwidth requirements. , Dagger) J There are two basic types of Internet cache memory.

Road Browser-Operates the cache memory of the Liu browser and the proxy cache memory which caches the information at the proxy server instead of the client computer. Many popular Internet browsers, including Netscope Navigator ™ and Microsoft Internet ExplorerTM, provide browser cache memory. These browsers include several options that allow users to adjust the browser cache settings. This allows the user to reserve a portion of the client computer's non-volatile storage device for storing documents that have been transferred from the web server to the client computer. Because this cache memory is stored on the client computer's non-volatile storage device, the contents of the cache memory are available to users of this particular customer month b. The browser cache is checked by determining how long each file has been in the cache memory to ensure that the files in the cache are "fresh". Old files are considered stale and are therefore removed from the browser cache, while newer files are retained 'to allow the browser to fetch files from the browser cache instead of from the source server Capture. This browser cache is usually useful when the user of a client computer chooses the back record in the browser to go back to the web page they have viewed. Proxy cache works the same as browser cache, but it is much larger. Proxy servers serve hundreds or thousands of users in the same way; large companies or ISPs (Internet Service Providers) often set them on their firewalls. Because the proxy cache memory usually has a large -6- this paper size is suitable for wealth ® @ 家 标准 (CNS) A4 size (210 X 297) '' 517196 A7 _ 一 _____B7 V. Description of invention (4) fUser , So they are good at reducing latency and traffic. Latency and traffic are reduced because popular items are requested only once and can serve large I clients. Most proxy caches are used by large companies or lsps who want to reduce the amount of Internet bandwidth used. Because cache memory is shared by large users, there are a large number of shared hit targets (that is, objects requested by a large number of client computers). A 50% effective or higher hit rate is common. Proxy cache is a type of shared cache that is not available to users of specific client computers, as is the case with browsing cache1 cache. Programmers insert information or "tags" into their documents to control the freshness of the particulars. Hypertext Markup Language (HTML) markup and Hypertext Transfer Protocol (HTTP) headers are two types of HTML authors used to control whether the client computer retrieves a cache from a cache or a web page from a web server You can place the tag | in the < head > section of the file, which describes the attributes of the file. These metatags are often used to mark a file as uncacheable or to expire it at some point. Authors may wish to mark a file as non-cacheable because it contains complaints. For example, documents containing stock quotes may be considered dynamic and non-cacheable. Because the stock market is changing throughout the day. Meta tags are usually only valued by browser cache memory (which actually reads HTML), but not by proxy cache memory (which almost never reads HTML in documents). Therefore, the "uncacheable" meta tag placed on a document does not necessarily keep it fresh, if it passes the Chinese paper standard (CNS) A4 specification (210 X 297 mm) 517196 A7 B7 2. Description of invention (5) The words of shared or proxy cache memory. True HTTP headers provide control over how browser caches and proxies handle files. They are usually generated automatically by a web server. The Ding TP header is sent by the server before HTML. It can only be seen by the browser and any intermediate cache memory. A typical HTTP 1.1 response header might look like this: HTTP / 1.1 200 OK Date (Fri) 30 Fri 1998 13: 19: 41 GMT Server (server): Apache / 1 · 3. 3 (Unix) Cache-Control: max-a ge = 3 6 0 0, must- r ev a 1 idate (must be re-confirmed) Expires (Sun), 09 Jul 2000 14: 19 : 41 GMT Last-Modified · Fri, 07 Jul 2000 02: 28: 12 GMT Etag (electronic tag): "3e 86—410— 3596fbbc" Content-Length (Content Length): 1040 CONTENT-Typ e (content type) · The text / html HTML file will follow these headers, separated by a blank line. In the prior art, Expires (expiration) HTTP headers are the basic means of controlling cache memory. The Expires HTTP header informs all cache memories of the freshness of a file; after that time, the cache will come back to check the source server to see if a file has been changed. Most web servers allow you to set Expires response headers in a variety of ways. Usually, they will allow setting the absolute time to expire, which is -8-

Η line This paper size is applicable to China National Standard (CNS) A4 (210 × 297 mm) 517196 A7

Based on when the client last saw the object (last access time), or based on when the file was last changed on your server (last modified time). The Expires header is especially good for making quiet pages cacheable. Because static pages do not change often, long expiration times can be set. Cached documents make a site look more responsive because less data needs to be retrieved from the origin server. The cache expiration header is also useful for files whose cache memory changes regularly. For example, if a stock news page is updated every day at 6 AM, the file can be set to expire at that time, so the cache memory will know when to get a fresh copy of 'no need user to go from their browser Click on "reload" $ One challenge to the current web cache memory approach described above is that the whole thing is marked as cacheable or not cacheable. Often only a few parts of a given file are dynamic and therefore not cacheable. For example, on the stock page listing 30 industrial stock prices of Dow J0nes, the names of 30 stocks remain unchanged, and only the stock price changes frequently. When any information in a file is dynamic, the author of the file usually marks the entire file as non-cacheable, even though only a small percentage of the file is dynamic. Another challenge is to set a validity period that controls whether a file is fresh or not, also for the entire file 'and not for parts of the file. For example, if a document includes the prices of 30 industrial stocks of Qiongqiong and news related to the companies that make up the "Dow" industry, the stock price is believed to be within a few minutes (or -9- Zhang scale applies Chinese national standards ( C1 ^ 4; see the grid (21〇χ ----517196 A7 B7 --- ^ V. The description of the invention (even on the real-time stock service site even after a few seconds) will expire. Another-aspect ' News about the corresponding company is believed to stay fresh for a much longer period of time, perhaps hours, or even days. However, prior art has set novel restrictions on the entire file, rather than setting some What is needed is a method of marking some parts of a file as dynamic. In addition, 'a method of setting a validity period for some parts of the file instead of the entire file is needed. SUMMARY OF THE INVENTION It has been found that providing part markup of a file enables parts of the file to be used Treating the static part and stating its copy in the cache memory for a longer period of time 'allows other parts of the file to be treated as dynamic parts, making it more frequent Retrieved from a source (or network) server .: The added section mark allows the creator of the file to detail each part of the document: the "week" freshness period, so that some parts are served from the network more frequently than others. To refresh. Those files that would traditionally be considered dynamic and therefore not cacheable now include a larger static section, which can be cached by the server or client computer system. Put the validity period flags on each, Shao Fangshang 'This allows some parts to be seen as more tragic than others, thereby increasing the frequency of refreshing these dynamic parts. The use of web servers marked by document parts improves efficiency and output. First of all' The static file area is sent to the client less frequently because the client can cache the static part from the client's browser ^ cache memory to retrieve the static part. The first: two, two, the dynamic servo, the dynamic one, and the other. The size is smaller than 10-^ «Suitable_297mm factory 517196 A7 B7 V. Description of the invention (The traditional complaint file is smaller, so it is collected and sent to the customer by the web server during the dynamic data refresh process. The amount of data sent by the computer is small. Third, less dynamic parts, such as stock news articles, are not sent as frequently as more dynamic parts such as stock prices. Therefore, web servers need to ship There is less data than in the prior art, so it looks more responsive and can provide content to more users at the same time. The foregoing is a summary, so it must be simplified and general, omitting details; therefore ' Those skilled in the art will understand that this summary is merely illustrative and is not intended as any limitation. From the non-limiting review description set forth below, it will be clear that other aspects of the present invention are only defined by the scope of the patent application Aotu Brief Description By referring to the accompanying drawings, those skilled in the art can easily understand the present invention and clearly see its multiple objects, features and advantages. The use of the same reference symbols in different drawings indicates similar or identical projects. Figure 1 is a block diagram of a server computer that provides static and dynamic information to a client computer via a computer network. Figure 2 is an example web page document with static and dynamic parts. Figure 3 shows an example HTML code for translating documents. One part is referred to as dynamic; 9 is a block diagram 'shows that the content of the file is pushed and requested by a computing device and stored in a cache memory area. Figure: Yes-a block diagram. Shows the file. The content is pushed and requested by a generalized calculation and it is static or dynamic based on the data. There are two cache entries -11-This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 517196 A7 ____B7 V. Description of the invention (n) in the memory area; Figure 6 is a flowchart showing that according to the age of the file part in the cache, the data is retrieved from a cache and part of the data is retrieved from the server Request; and FIG. 7 is a block diagram of an information processing system capable of implementing the present invention. Detailed description The following provides a detailed description of an example of the present invention, but should not limit the invention itself. Conversely, any number of modifications may fall within the scope of the invention as defined in the claims following this description. 1, FIG. 1 shows a server computer system, which provides data to the server system 130 and the client computer system 160. The server computer system 100 includes a non-volatile memory device accessible by the feeding computer 105. The data stored in the non-volatile memory device 110 is served to the client's computer upon request. The figure shows that there is static web page data 5 and the dynamic data 120 on the non-volatile memory device 11 (). The server computer system 110 is connected to a computer network 125 to provide information to the client computer. Computer network 125 may be any network, including the Internet, that connects computer systems to each other. The displayed client computer system 16 () requests data from the feeder computer system 100 via the proxy feeder computer system, and the client computer system 16 shown can also request information from the server computer system 100 without using a proxy system . The proxy server computer system 130 includes a proxy server computer 135, which stores data on a non-volatile memory device. The proxy server computer observes multiple client computer systems. The client computer requests information from the feeder computer system and other dragon devices connected to the computer network 125. These requests meet the electrical requirements I _—_ This paper standard is applicable to the TSS Home Standard (CNS) A4 specification (21GX297 public director) ----- 517196 A7

Before the brain network 125, it must be able to pass through a proxy server computer system. The data returned from the server must also pass through the proxy server computer system 13 before returning to the requesting client such as the client computer system 160. Many customers may request the same information, today's news stories and popular e-commerce shopping sites. In order to speed up the distribution of frequently used pages returned from the server, the proxy server computer system 130 temporarily stores the returned documents in the proxy cache memory 145. In this way, a client can receive the requested document from the proxy server computer system 130, without having to receive from the source server connected to the computer network. A dynamic file is divided into a static part 150 and a dynamic part 155. The static part 15 has a header section that is longer than the dynamic part 155. When a client requests the file, the proxy feeder computer system 130 checks the proxy cache 145 and determines whether the static portion 15G is stale by checking its validity period header or by implementing other novel mechanisms. Other novel mechanisms include: retrieving: a new copy of the document from a source server (eg, server computer system 100) after the document has been stored in the proxy cache memory 145 for a predetermined amount of time . If it is determined that the static portion 15 is stale, a new copy of the static portion (or the entire file) is requested and retrieved from the source feeder. On the other hand, if it is determined that the static part 15 is not stale, then the static part 15 is read from the proxy cache 圮 fe body 145 and returned to the requesting client. The file includes special tags that identify some parts of the file as dynamic. The two moving parts are stored in the proxy cache 155 as the dynamic part 155. As its name implies, the dynamic part 155 became obsolete before the static part 150. Some dynamic parts become obsolete so quickly, such as the stock quotes ’because the source server is updating the data almost continuously. Bag -13-

517196 A7 B7 V. Description of the invention (including the dynamic part of the real-time information is not cached, so fresh information is always retrieved from the source server. The life cycle of other dynamic parts is shorter than the static part, but can still be in a short period It is cached on the basis of. For example, news about a company can be updated every 15 minutes, every hour, or some other frequency depending on the content provider. This dynamic in-person identification is marked with special tags It is dynamic and expires after a given period of time. When the dynamic part 155 is determined to be stale, it is only necessary to obtain the updated dynamic data from the source server without retrieving the entire file. The client knows that the system 160 includes Computer system 165 and non-volatile memory device 170. Computer system 165 includes a display for using a web browser software (eg, Netscope Navigator ™ or Microsoft Internet

Explorer ™) to view the returned page. The cache memory 75 is stored on the non-volatile memory device 170. The cache memory 175 has a quiet portion 180 and a dynamic portion 185 for storing files. Unlike the proxy cache 145, the cache 175 can only be accessed by the client computer system 165. Entries are placed in cache memory 175 and read from cache memory 175 by a web browser software. When the user browses to a web page that has been retrieved from the source server, the software determines whether the data is stale. If the data is sold, the updated shell material (either the static part 18 or the dynamic part 185) is retrieved from the source server (such as the server computer system 100). On the other hand, if the data is not stale, it is retrieved from the cache memory 175. Similarly, by using a special mark in the file to identify the dynamic part 185, the amount of data that needs to be expanded to keep the file fresh can be kept to a minimum. By only capturing the dynamic part, it can only take up a small proportion of the entire document. The client computer system 16 from -14- this paper ruler National Standard (CNS) T ^ see grid (210 X 29 Seoul _)- Bookbinding

517196 A7 B7 V. Description of the invention (The source server retrieves the updated file faster than requesting the entire file. Figure 2 shows. The display screen 200 includes a web page 205 and a task bar area 285. The title bar 207 shows what is being displayed The title of the webpage 205 is "My Stock Quotes". The webpage 205 is an example of a page that can be edited by a user, and it only displays those stocks that the user is interested in. The webpage 205 is an electronic file containing both dynamic and static information Format. Webpage 205 includes two sets of dynamic information: the current stock quote table, which will become obsolete fairly quickly; and related news, which becomes obsolete at a slower rate. Webpage 205 also includes static information such as company names and The title displayed on the page. The dynamic information shown has a dashed box. The dashed box illustrates the dynamic part of the webpage 205, but this dashed box is not actually displayed to the user. The dynamic information includes the dynamic quotes 210, 220, and 230. This data becomes particularly stale during a trading day and is frequently retrieved from the origin server, not from Retrieved from the memory area. The dynamic data also includes company information hyperlinks 24 0, 25 0, and 260. These hyperlinks will be added to or removed from page 205 as further news corresponding to changing stocks. Because of stock quotes Tables change more frequently than news stories, so news stories can be retrieved from cache memory until the news becomes stale. For example, company information hyperlinks 240 '250 and 260 can continue to be retrieved from cache memory Fetches until a time period occurs, such as every 15 minutes. When this time period elapses, fresh hyperlinks will be retrieved from the source server. If the user wishes to edit the stock page, such as adding or deleting the page On the stocks that appear, press the command button 270 to export editing functions. Use the "task bar" 285 to switch between the various active tasks running on the computer. As "My Stocks" (life) -15 -This paper size applies to China National Standard (CNS) A4 (210 X 297 mm)

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517196 A7 B7 13 V. Description of the invention (The browser session of the order button 295 is included in the task bar. The start button 290 is used to request other applications. Figure 3 shows a display 300, which is the display 200 (see Figure 2) Figure 3 also shows the source code window 350. The source code window 350 displays the relevant part of the source code corresponding to the web page 305. The web page 305 displays the "ABC company" (static data) and the corresponding stock quote table 210 (dynamic Source). The source code window 350 displays the HTML (Hyper Document Markup Language) source code used to generate the display materials shown in the web page 305. The static code 360 is used to generate the "ABC company" static text. The dynamic stock quote table 310 is used "Start dynamic tag" 370, dynamic code 380, and "End dynamic tag" 390. "Start dynamic tag" 370 is displayed as "< fragl>." This special tag indicates to the browser that it follows "start The data after "dynamic tag" 370 is dynamic data and should be handled accordingly. The dynamic code 3 8 0 is displayed as "http \\ quote, com / quote = abc". The dynamic code 380 is Network location of the dynamic part. To update the stock quotes 210, the browser will request quote = abc from the web server quote, com. Quote, com will respond by providing the stock quotes instead of the entire web page. "End dynamic Marker 390 appears as "< / dyn-frag 1 / max-age = 2 >", which indicates the end of the dynamic data section named "dyn-fragl, and sets the maximum cache memory limit to 2 minutes ( "Ma X-age = 2"). If the user browses back to the web page 3 0 5 such as using the "back" button on the browser, the browser will check whether the stock quote table 205 is 2 minutes ago. If the stock quote table stored in the cache memory is not older than 2 minutes, the cache memory value is used. On the other hand, if the value is earlier than 2 minutes, the new stock market is retrieved from the server- 16- This paper size is in accordance with China National Standard (CNS) A4 (210 X 297 mm) 517196 A7 B7 14 V. Description of the invention (Fact sheet. Dynamic news hyperlinks 240, 250 and 260 (see Figure 2) Use longer in "end dynamic tag" Time constraints are implemented. Figure 4 shows a block diagram of a generalized computing device that retrieves static and dynamic data from a server 480. The server 480 includes a non-volatile memory device 490 that stores data that is served to clients on request. The generalized computing device 400 issues a request 468 to obtain a specific data item from the non-volatile memory device 490. The "data retrieval" process 470 retrieves the requested data and sends the data packet 472 back to the generalized computing device 400 via the computer network 465. A common example of computer network 465 is the Internet. In another example, the server 480 is programmed to push data to the generalized computing device 400 at various times. When this time arrives, the "push data" process 475 operates to send the data packet 478 to the generalized computer device 400 via the computer network 465. An example of using the "push data" process 475 is to provide a general updated computing device 400 with a continuously updated ticker bar, which is displayed in a window on the display of the device. The packet is retrieved by the network interface 460 Take it and provide it to the browser 410. Browser 410 uses user 408 to receive commands from user 405. The user 408 often includes using a pointing device (eg, a mouse) and a keyboard, and is connected to the browser 410. The browser 410 also accesses the system clock 415 to determine whether the data stored in the cache memory 420 is stale. The browser 410 displays a web page 435 on a display attached to the generalized computing device 400. The web page 435 includes a static portion 440 and dynamic portions 445, 450, and 455. The cache memory 420 also includes static data 425 and dynamic data 430. When the user 405 uses the user 408 to browse to a specific web page, the browser 410 checks whether the requested web page is cached. Such as -17- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 517196 A7 _______ B7 V. Description of the invention ^ 15) " If the webpage is cached, the browser 41 〇 check with The validity data included in the tags associated with the static data 425 and the dynamic data 430 are compared with the current time taken from the system clock 415. If the material is stale, an updated copy is requested from server 480. On the other hand, if the material is not stale, a copy of the web page located in cache memory 42 is used. Because the dynamic data is separated from the quiet data, and it is more likely that only the dynamic data will need to be retrieved from the server 480, thereby reducing the size of the data packet 472 returned to the generalized computing device 400. Smaller data packages can be processed faster and more efficiently by the server 480 and the generalized computing device 400, thereby spending less time displaying the web page 435. The generalized computing device 500 shown in FIG. 5 is similar to the generalized computing device 400 shown in FIG. However, the generalized computing device 500 shown has two cache memories: a non-volatile memory cache memory 51 for storing static data 54 and a RAM cache memory 530 for storing dynamic data 54 (^ In a constrained device, limited non-volatile storage space, such as flash memory, may be available. In addition, constrained generalized computing devices may operate slower than desktop computers, so storing data It is much faster to store data in RAM than to store data in non-volatile storage area. Non-volatile storage area 51 is used to store static data when static computing device 510 is turned off and restarted. Static cache The memory is still intact. The dynamic data 540 is likely to become stale before the generalized computing device is turned off and restarted. Therefore, it is almost impossible to store the dynamic data 540 in the random access memory cache memory 53. Will degrade performance. Figure 6 shows the flow of processing static and dynamic data stored in cache memory -18- 517196 A7 -----------B7 V. Description of the invention () 16 'Figure. When User browses to one For web pages, processing begins at step 600, where the requested web page is fetched from Shaanxi (input 605). If the expanded web page is stale or does not exist in the cache memory, The decision step 610 branches to the "yes" branch 615, and a new copy of the document is retrieved from the web server (step 62). If the electronic document (webpage) exists in the cache memory, the decision step 61 〇 Branch to "No, branch 625, and use the cached file (step 630). The dynamic portion of the file is checked to see if they are stale. Retrieve the next one from the cache (section A) dynamic part (step 640), and determine whether the dynamic part is stale (decision 650). If it is stale, then take "yes, branch 655, and extract the dynamic part from the server ( Step 66〇). On the other hand, if the dynamic part is not yet stale, decision step 650 branches to "No, branch 665, and uses the dynamic part taken from the cache memory (Step 67)). If just processed The dynamic part is In the latter dynamic part, the decision step 680 branches to the "yes" branch 685, where the processing is terminated at the termination program 695. On the other hand, if there are more dynamic parts to be processed in the webpage, then take " No "branch 690 and return to processing the next dynamic part. Fig. 7 shows an information processing system 701, which is a simplified example of a computer system capable of performing the present invention. The computer system 701 includes a processor 700, which communicates with a host bus 705 is connected. A level 2 (L2) cache memory 710 is also connected to the host bus 705. The host-PCI bridge 715 is connected to the main memory 720, including the cache memory and the main memory control functions, and Provides bus control to handle transfers among PCI bus 725, processor 700, L2 cache memory 710, main memory 720, and host bus 705. PCI bus

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Line-19- This paper size is applicable to China A4 specification (21 × 297mm) 517196 A7 B7 17 V. Description of invention (725 provides interface for various devices (for example, LAN card 730). PCI-ISA bridge 735 provides sink Bus control to handle transfers between PCI bus 725 and ISA bus 740, universal serial bus (USB) function 745, IDE device function 750, power management function 7 5 5 Other features shown, such as real-time clock (RTC), DMA control, interrupt support, and system management bus support. Peripherals and input / output (I / O) devices can be connected to various interfaces connected to the ISA bus 740 760 (for example: parallel interface 762, serial interface 764, infrared (IR) interface 766, keyboard interface 768, mouse interface 770, and fixed disk (FDD) 772). Another approach is that many I / O devices Accepted by a super I / O controller (not shown) connected to the ISA bus 740. The BIOS 780 connects to the ISA bus 740 and incorporates the necessary processor-executable code for various low-level system functions and system boot ( boot) function. BIOS780 can be stored in any computer-readable media, including magnetic storage media, optical storage media, flash memory, random access memory, read-only memory, and communication media (such as transmitting command-encoded signals) , Signal from the network). To connect computer system 701 to another computer system to copy files over the network, LAN card 730 is connected to PCI-ISA bridge 735. Similarly, to connect computer system 701 to an ISP To connect to the Internet using a telephone line connection, modem 775 is connected to serial port 764 and PCI — ISA Bridge 735 ° Although the computer system described in Figure 7 can perform the copying process described here, this computer system only It is just an example of a computer system. Those skilled in the art will understand that there are many other computer system designs that can also achieve this. -20 This paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 517196 A7 B7 18 V. The copying process described in the description of the invention. One of the preferred implementations of the present invention is an application program, that is, a set of instructions in a code module. Code), which can reside, for example, in the computer's random access memory. This set of instructions can be stored in another computer's memory, such as a hard drive or removable memory, such as a compact disc (for ultimate use CDROM), floppy disks (for ultimate use in floppy disk drives), or downloading through the Internet or other computer networks until the computer needs them. Thus, the present invention can be used as a computer program product in a computer achieve. It is expected that the various methods described by ㈣ are selectively activated or configured by ㈣ and can be conveniently implemented in general-purpose computers, but those of ordinary skill in the art will also understand that these methods can be constructed to perform the required method steps. Hardware, firmware, or specialized devices. Although specific embodiments of the invention have been shown and described, it will be apparent to those skilled in the art that many changes and modifications can be made in accordance with the teachings herein without departing from the invention and its broader features. The scope of the attached patent shall include all these changes and amendments in the scope of these patents, and the same shall be included in the true spirit and scope of the present invention. Furthermore, it should be understood that the present invention only covers the scope of the patent application attached to the so-called Shi 1 Tu, Tian. Those skilled in the art will understand that a specific number of elements of a patent application range should be referred to a specific number. This designation will be clearly listed in the patent application scope. In this enumeration, there are no restrictions on the species. For non-limiting examples, in order to facilitate understanding, the scope of the patent application attached to Xiayishebu 4 includes the use of the guiding phrase "at least one," and one or more to introduce elements of the patent application scope. However, even if Tian Tianyi applied for a patent in the range of -21-517196

Including one or more leading phrases "or" at least one "and" a "or" an "(a), consider, include the left one, chord, A, Gonglitun f's The use should not be construed as the meaning of the indefinite article "a" π Pavilion-the patent application introduced from 'renyifeian' put the enclosures containing such introduced patent scope elements "application scope limitation In the case of an invention containing only one such element, the same applies to the use of a definite article in the scope of patent applications. At -22- This paper size applies to China National Standard (CNS) A4 (210X297 mm) ~ 1 ------

Claims (1)

D8 Patent Application Scope 1 • An electronic file sent from a first computer to a second computer, the electronic file contains: one or more dynamic content tags, each dynamic content tag identifying a dynamic part of the electronic file; one or more A static portion; and wherein the electronic file is displayed by a software program running on a second computer. 2 The electronic file as described in item 丨 of the patent application scope, further comprising: an updated dynamic portion sent from the first computer to the second computer, wherein the updated dynamic portion replaces the included in the electronic file One of the dynamic parts. 3. The electronic file as described in item 1 of the scope of patent application, further comprising: a new mark associated with one or more complaints, the new mark indicating the novel period of the associated dynamic content mark. 4 · The electronic file according to item 1 of the scope of patent application, further comprising: a novel mark associated with one or more static content marks, each static content mark being associated with a static portion; Brother indicates a novel period for the associated static part. 5. The electronic file as described in item 1 of the scope of patent application, further comprising: a first cache memory configured on a non-volatile memory device that can be accessed by the second computer; and the far static part is stored in The first cache memory. 6. The electronic file according to item 5 of the patent application scope, wherein the dynamic part is stored in a second cache memory. -23- This paper size applies to Chinese National Standard (CNS) A4 (210 X 297 mm) 517196 A8 B8 C8 D8 Scope of patent application 7 The electronic file according to item 6 of the scope of patent application, wherein the second cache memory is arranged in a random access memory accessible by a second computer. 8. The electronic file according to item 6 of the patent application scope, wherein the second cache memory is included in the first cache memory. 9-The electronic file as described in item 1 of the patent application scope, wherein the second computer is a proxy server. 10. · A method of providing an electronic file on a first computer, the method comprising: extracting a static portion of the electronic file; determining whether the static portion is stale; and in a case where it is determined that the static portion is not stale, from a The static portion is expanded in the cache memory in response to this determination; and one or more dynamic portions of the electronic file are requested from the second computer. 11. The method according to item 10 of the scope of patent application, wherein the retrieving step further comprises: requesting the updated static data from the second computer, wherein the static data replaces the static part of the electronic file; The request for static information was in response to the static part being stale ok. 12. The method as described in item 10 of the scope of patent application, further comprising: determining whether the dynamic parts are stale; determining that the dynamic parts are not stale, and expanding the dynamic parts from the second cache memory m The response should be determined; and in the case where it is determined that these dynamic parts are obsolete, Pack -24- Seek to answer should be ok. 13. The method according to item 10 of the scope of patent application, further comprising: identifying the dynamic parts, the identification includes reading out a dynamic content target. 14. The method according to item 10 of the scope of patent application, further comprising: The static part is stored in a cache memory; wherein retrieving the static part includes reading the static part from the cache memory. 15. The method of claim 10, further comprising: storing the dynamic portion in a cache memory. 16. The method as described in item 10 of the scope of patent application, further comprising: storing the static part in a first cache memory; and storing the dynamic part in a first cache memory in. 17. The method according to item 16 of the patent application scope, further comprising: configuring the first cache memory on a volatile non-volatile memory device accessible by the first computer. 18. The method according to item I of the patent application scope, wherein the second cache memory is included in the first cache memory. 19. The method according to item 16 of the scope of patent application, further comprising: configuring a second cache memory in a random access memory accessible by the first computer. 20. The method as described in claim 10, wherein the second computer is a server. 21. The method as described in item 10 of the scope of patent application, further comprising: -25- a computer network accessed by the first and second computers; and, 'two by the private network from the second The computer sends a static bear and a dynamic part to the first computer. A 22 · —an information processing system, including one or more processors; a storage device accessible by the processors; a cache memory configured in the storage device; and a storage device in the storage device An electronic file on a storage device, the electronic file comprising: one or more dynamic file portions; a dynamic content tag associated with each dynamic file portion; one or more static file portions; and storing the static file portion to the A device in the cache memory; and a device for determining whether the stored static file portion is stale, the determining device further comprising: updating and updating from the second monthly backup if it is determined that the stored static file portion is stale The static part of the response to the determined device; and in the case of determining that the stored static file portion is not stale, extracting the stored static file portion from the cache memory to respond to the determined device. 23. The information processing system according to item 22 of the scope of patent application, wherein the storage device is a non-volatile storage device. 24. The information processing system as described in item 22 of the scope of patent application, wherein the storage -26-this paper size applies to China National Standard (CNS) A4 specifications (210 X 297 issued) 517196 A8 B8 C8 D8 The device is a memory. • The information processing system according to item 22 of the patent application scope, wherein the storage device includes a memory and a non-volatile storage device. The information processing system according to item 25 of the scope of patent application, wherein the cache memory is configured in the non-volatile storage device, and the information processing system further includes a second cache memory configured in the memory And a device for storing the dynamic files in the second high cache memory. 27. The information processing system as described in item 22 of the scope of patent application, further comprising: a device for storing the dynamic files in the cache memory. 28. The information processing system according to item 22 of the scope of patent application, further comprising: a device for sending the updated dynamic document portion from the second computer to the information processing system; and replacing the updated dynamic document portion with the Device for dynamic file section. 29. The information processing system according to item 22 of the scope of patent application, further comprising: a computer network linking the child information processing system to the second computer; wherein the illegal electronic file is sent from the second computer to the information processing system. 3〇 · —A computer program product for providing an electronic file on the first computer. The method includes: -27- This paper size applies to China National Standards (CNS) A4 (21〇χ 297 mm)- ---------- 517196 ABC D, a device for patent application to retrieve a static part of the electronic file; a device for determining whether the static part is stale; a device for determining if the static part is not stale; A device for retrieving the static part in the cache memory in response to the determined device; and a device for requesting one or more dynamic parts of the electronic file from the second computer. 31. The computer program product described in claim 30, wherein the means for retrieving further comprises: means for requesting updated static data from a second computer, wherein the static data replaces the static part of the electronic file The device for requesting the updated static data is to respond to the judgment that the static part is stale. 32. The computer program product described in item 30 of the scope of patent application, further comprising: a device for determining whether the dynamic parts are stale; fetching from a second cache memory when it is determined that the dynamic parts are not stale These dynamic sections respond to this identified device; and where the requesting device is executed in response to the determination that the dynamic sections are stale. 33. The computer program product described in item 30 of the scope of patent application, further comprising: means for identifying the dynamic parts, the identification including reading a dynamic content mark. 34. The computer program product described in item 30 of the scope of patent application, further package -28- This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 517196 Including: a device for storing the static part in a cache memory; the device for capturing the static part includes a device for reading the static part from the cache memory. 35. The computer program product described in item 30 of the scope of patent application, further comprising: a device for storing the dynamic parts in a cache memory. 36. The computer program product described in item 30 of the scope of patent application, further comprising: a device for storing the static part in a first / cache memory; and storing the dynamic part in a second cache Device in memory. 37. The computer program product according to item 36 of the patent application scope, further comprising: a device for disposing the first cache memory on a non-volatile storage device accessible by the first computer. 38. The computer program product according to item 37 of the patent application scope, wherein the second cache memory is included in the first cache memory. 39. The computer program product described in item 36 of the scope of patent application, further comprising: a device for disposing the second cache memory in a random access memory accessible by the first computer. 40. The computer program product according to item 30 of the scope of patent application, wherein the second computer is a server. -29- This paper size is in accordance with China National Standard (CNS) A4 (210 X 297 mm) 517196 8 8 8 8 AB c D, patent scope 41. Computer program products as described in item 30 of patent scope Further comprising: means for accessing a computer network by the first and second computers; and means for sending static and dynamic parts from the second computer to the first computer via the computer network. _ Binding Line -30 This paper ^ size applies to China National Standard (CNS) A4 (210 X 297 mm)